OPTICS, CHEMISTRY, AND BIOLOGY 59 



influenced by the average density of the bodies 

 beyond a certain density. To understand the 

 significance of the latter assumption we must 

 return to p. 43, where the electric charge of a 

 body is expressed by e = D ^mr, and D is the 

 average density of the universe in question, m is 

 the mass, and r the radius of a planetary body in 

 it. The D was introduced in order to bring the 

 electric charge of an electron up to a point sufficient 

 to replace gravitational attraction. But Maxwell's 

 original equation for the relation between mass and 



charge is m =-^-, or e = Jmr. If this equation 

 holds good for the infra-electron, its charge will be 

 10~ 38 * 5 that of an electron instead of lO* 27 - 5 , and the 

 electrostatic attraction will be reduced 10 33 times 

 i.e., in the same proportion as the centrifugal force. 

 Therefore the electric force will balance the centri- 

 fugal force, as in the infra-world, and luminous 

 vibrations and chemical action are possible. 



The light of the infra-world, like any other 

 transverse ether disturbance, will have a velocity 

 of 3 x 10 10 cm. per second. It will, therefore, pass 

 out of the atomic system in something like a 

 trillionth of a second. But since the scale of time 

 is also reduced, the same passage will take 10,000 

 infra-seconds, or something under three infra-hours, 

 velocity of light will, therefore, play the same 

 part in the infra-world as it does in our world. 



